Bill

package question;

public class Bill {

	//DO_NOT_EDIT_ANYTHING_ABOVE_THIS_LINE
	
	
	private double limitingAmount;
	private double currentDebt;
	private double totalMoneySpent;
	
	public Bill(double limitingAmount) {
		this.limitingAmount = limitingAmount;
		currentDebt = 0;
		totalMoneySpent = 0;
	}
	
	/** This method ensures that amount cannot exceed the limit.
	 * 
	 * @param amount currentDebt + cost of operation that comes from input file.
	 * @return validity
	 */
	public boolean check (double amount) {
		if (amount>limitingAmount)
			return false;
		else
			return true;
	}
	
	/** This method raises the currentDebt whenever an operation occurs
	 * 
	 * @param amount
	 */
	public void add (double amount) {
		currentDebt += amount;
	}
	
	/** This method decreases the currentDebt when customer pays hiss bill.
	 *  if he pays more then his debt then the surplus won't take into account.
	 * @param amount
	 */
	public void pay (double amount) {
		if (amount <=  currentDebt) {
		currentDebt -= amount;
		totalMoneySpent += amount;
		}
		else {
			totalMoneySpent += currentDebt;
			currentDebt = 0;
		}
	}
	/** This method is changing the limit.
	 *  But the limit must be great equal the currentDebt!
	 * @param amount
	 */
	public void changeTheLimit (double amount) {
		if (amount >= currentDebt) { 
		this.limitingAmount = amount;
		}
	}


	public double getLimitingAmount() {
		return limitingAmount;
	}


	public double getCurrentDebt() {
		return currentDebt;
	}


	public double getTotalMoneySpent() {
		return totalMoneySpent;
	}
	
	//DO_NOT_EDIT_ANYTHING_BELOW_THIS_LINE
}